Malicious PDF — malware analysis report

Static analysis result for SHA-256 031339abb3e9272b…

MALICIOUS

PDF

73.8 KB Created: 2020-10-04 17:28:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: c18976341a61af63aa3890d32269fc8f SHA-1: b5bb36ef89643e384d0dcc4e47e9e840047ac1c1 SHA-256: 031339abb3e9272b94b848a63f366ee41f8fe7a037c1d850ee93ac8a2d411051
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, also contains a URL that appears to be part of a link farm designed to attract traffic. This suggests the primary purpose is to redirect users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9819

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ggtraff.ru/strik?keyword=il+nome+della+rosa+pdf+ita In PDF document text
    • http://wenisubez.vinyllegendphotos.com/uploads/1/3/0/7/130775309/nokixagalawuvi.pdfIn PDF document text
    • http://files.foodloveblog.com/uploads/1/3/1/3/131380868/vosirijofa.pdfIn PDF document text
    • http://files.ferrofluid-design.com/uploads/1/3/1/4/131438190/buxuve.pdfIn PDF document text
    • http://wuxezi.s-4radio.com/uploads/1/3/0/7/130739624/nodevikururur-bapodafag-tamafedakule.pdfIn PDF document text
    • http://jeselune.imadocshighsign.com/uploads/1/3/1/3/131379213/bukimupuwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd701204-51fa-4bf2-82d2-ba2d65ae3a87/kigagapuje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b59937a0-ccd9-4a0c-85a0-0930672bd336/60840989664.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7cabd30-4cb1-4d91-aa89-ca72ba033540/noxuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c713f3f-4603-4f2e-90d9-ee6d402ab4d8/jodunon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24028fd1-f0a5-43bc-9da1-54e77178f98c/76724798983.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60139727-4cde-4e39-b2fa-839150cf02ac/wigolunonopom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c3747f4-491a-4d8d-b6c1-7b4c4cba073e/88930976111.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7946791-8286-4113-991d-9f0c88f630e1/rebuzilafowarelokelazub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/115834f0-8723-4333-8052-7d900a7d4f13/xasetenerepinopinuwiged.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a19782b2-78bf-4c19-a805-bab69ce3cde7/65346355151.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32c61815-9370-491f-a1f3-cfbd8ba5442e/53452679245.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1075435-5464-49da-9a3d-4b15890a2cde/salakaluzu.pdfIn PDF document text

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